package com.huohuzhihui.weixin.servlet;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class BeanFactoryContext implements ApplicationContextAware {
    private static ApplicationContext applicationContext;
   @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
       if(BeanFactoryContext.applicationContext == null) {
    	   BeanFactoryContext.applicationContext = applicationContext;
       }
    }

    //获取applicationContext
    public static ApplicationContext getApplicationContext(){
        return applicationContext;
    }

    //通过name获取 Bean.
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }

}